THE BEST SIDE OF BUY ACTAVIS PROMETHAZINE WITH CODEINE SYRUP

G-protein coupled opioid receptor that functions as a receptor for endogenous alpha-neoendorphins and dynorphins, but has very low affinity for beta-endorphins. Also features for a receptor for several artificial opioids and to the psychoactive diterpene salvinorin A. Ligand binding causes a conformation adjust that triggers signaling via guanine n